A Joint Grid-Source Planning Method Considering Adaptability of Power System

Abstract With the large-scale renewable energy access to the power grid, the construction and operation state of the power system have been greatly changed. Therefore, the adaptability of power system to deal with the fluctuation and uncertainty of renewable energy is of great significance to ensure the safe and stable operation of the system and promote the consumption of renewable energy. Based on the structural characteristics and operation status of the power system with high proportion of renewable energy, the adaptability index of the system construction and generators capacity is proposed, which takes into account the security, validity, stability and supply-demand balance of the power system, and comprehensively evaluates the acceptance capacity of the system to the renewable energy. On this basis, a multi-objective power system planning model based on grid-source coordination considering both economy and adaptability is established. The optimal scheme is obtained through the comprehensive decision of the optimal scheme set by the nonlinear improved principal component analysis. Finally, the effectiveness of the adaptability index and the planning model is verified by an example simulation with the improved Gaver-18 system.

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Planning and Operation of Renewable Energy Power System Based on Energy Internet Technology

E3S Web of Conferences ◽

10.1051/e3sconf/202125203008 ◽

2021 ◽

Vol 252 ◽

pp. 03008

Author(s):

Zhang Huichao ◽

Wang Zhuo ◽

Wang Han

Keyword(s):

Renewable Energy ◽

Energy Consumption ◽

Power System ◽

Large Scale ◽

Technical Problem ◽

Internet Technology ◽

Stable Operation ◽

Energy Internet ◽

The Sustainable Development ◽

Energy Consumption Patterns

Under the leaping development pattern of renewable energy brought by carbon emission targets, large-scale wind and solar power in high proportion of renewable energy power system has brought volatility and uncontrollable factors, and generation-grid coordination has become a technical problem for the safe and stable operation. The concept of energy Internet introduces Internet technology into the field of energy consumption application, which provides a new way for the full coupling of various energy consumption patterns, and is an effective method to solve the problem of safe and stable operation of high proportion renewable energy power system. Based on energy Internet technology, this paper designs the sustainable development architecture of generation-grid coordination from three aspects of planning, operation and mechanism, which lays a solid foundation for the development of generation-grid coordination in the future ' two high ' power system.

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Study on the Development and Utilization of Renewable Energy in China

E3S Web of Conferences ◽

10.1051/e3sconf/201913602013 ◽

2019 ◽

Vol 136 ◽

pp. 02013

Author(s):

Guizhou Ren ◽

Fangqing Li ◽

Gang Liu ◽

JianXin Ren ◽

Yudong Liu ◽

...

Keyword(s):

Renewable Energy ◽

Large Scale ◽

Power Grid ◽

Advanced Technology ◽

Stable Operation ◽

Industrialized Countries ◽

Energy Access ◽

Fossil Energy ◽

Development And Utilization ◽

Strategic Position

With the continuous consumption of fossil energy and non-renewable, countries all over the world pay more and more attention to the use of renewable energy, among which Denmark, Japan, Germany and so on are among the best. Based on the basic national conditions and the energy development situation of our country, the utilization of renewable energy in our country is also promoted to the national strategic position. Experience shows that large-scale renewable energy access to the power grid system can not only meet the electricity demand of industrialized countries. Moreover, the safe and stable operation of the power grid can be realized by advanced technical means. Through the analysis of some advanced technology and equipment research in the development and utilization of renewable energy in foreign power grid, in order to improve the repeatability of our country, The level of development and utilization of raw energy.

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Transmission Grid Expansion Planning of a High Proportion Renewable Energy Power System Based on Flexibility and Economy

Electronics ◽

10.3390/electronics9060966 ◽

2020 ◽

Vol 9 (6) ◽

pp. 966

Author(s):

Zhanpeng Chen ◽

Yan Hu ◽

Nengling Tai ◽

Xiangying Tang ◽

Guangzeng You

Keyword(s):

Renewable Energy ◽

Power System ◽

Large Scale ◽

Planning Process ◽

Planning Model ◽

Renewable Energy Consumption ◽

Transmission Grid ◽

Economic Operation ◽

The Impact ◽

Flexibility Index

The large-scale grid connection of renewable energy causes great uncertainty in power system planning and operation. The power system flexibility index can quantify the system’s ability to adjust to uncertain events such as renewable energy, load fluctuations, and faults. Compared with traditional planning methods, the flexibility planning method can accurately evaluate the impact of various uncertain events on the system during the planning process, thus effectively ensuring the safe and economic operation of renewable energy systems. First, from the perspective of power transmission and safe operation, the flexibility index of the transmission line is defined. On this basis, considering the system’s economic operation strategy, aiming at the optimization of flexibility, investment cost, operation cost, and renewable energy consumption, a multi-objective transmission grid planning model based on flexibility and economy is proposed. The NSGAII optimization algorithm is used to solve the model. Finally, the simulation is performed in the modified Garver-6 and IEEE RTS-24 node systems to analyze the effectiveness of the proposed model. The results show that the planning model can meet the needs of flexibility and economy, improve the transmission capacity of power grids, reduce the probability of renewable energy abandonment or exceeding power flow, as well as enhance the flexibility, economy, and reliability of power systems.

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The Flexible Operation of Coal Power and Its Renewable Integration Potential in China

Sustainability ◽

10.3390/su11164424 ◽

2019 ◽

Vol 11 (16) ◽

pp. 4424 ◽

Cited By ~ 2

Author(s):

Chunning Na ◽

Huan Pan ◽

Yuhong Zhu ◽

Jiahai Yuan ◽

Lixia Ding ◽

...

Keyword(s):

Renewable Energy ◽

Power Systems ◽

Power System ◽

Large Scale ◽

Renewable Integration ◽

Flexible Resources ◽

Feasible Option ◽

Coal Power ◽

Simulation Results ◽

Flexible Operation

At present time, China’s power systems face significant challenges in integrating large-scale renewable energy and reducing the curtailed renewable energy. In order to avoid the curtailment of renewable energy, the power systems need significant flexibility requirements in China. In regions where coal is still heavily relied upon for generating electricity, the flexible operations of coal power units will be the most feasible option to face these challenges. The study first focused on the reasons why the flexible operation of existing coal power units would potentially promote the integration of renewable energy in China and then reviewed the impacts on the performance levels of the units. A simple flexibility operation model was constructed to estimate the integration potential with the existing coal power units under several different scenarios. This study’s simulation results revealed that the existing retrofitted coal power units could provide flexibility in the promotion of the integration of renewable energy in a certain extent. However, the integration potential increment of 20% of the rated power for the coal power units was found to be lower than that of 30% of the rated power. Therefore, by considering the performance impacts of the coal power units with low performances in load operations, it was considered to not be economical for those units to operate at lower than 30% of the rated power. It was believed that once the capacity share of the renewable energy had achieved a continuously growing trend, the existing coal power units would fail to meet the flexibility requirements. Therefore, it was recommended in this study that other flexible resources should be deployed in the power systems for the purpose of reducing the curtailment of renewable energy. Furthermore, based on this study’s obtained evidence, in order to realize a power system with high proportions of renewable energy, China should strive to establish a power system with adequate flexible resources in the future.

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Control method for the stable operation of distributed inverters following the introduction of large-scale renewable energy to a remote island grid

Clean Energy ◽

10.1093/ce/zkab004 ◽

2021 ◽

Vol 5 (2) ◽

pp. 196-207

Author(s):

Shoichi Sato ◽

Yasuhiro Noro

Keyword(s):

Renewable Energy ◽

Large Scale ◽

Control Method ◽

Synchronous Generator ◽

Stable Operation ◽

Battery Energy Storage Systems ◽

Simulation Results ◽

Battery Energy ◽

Systems Simulation ◽

Different Characteristics

Abstract The introduction of large-scale renewable energy requires a control system that can operate multiple distributed inverters in a stable way. This study proposes an inverter control method that uses information corresponding to the inertia of the synchronous generator to coordinate the operation of battery energy storage systems. Simulation results for a system with multiple inverters applying the control method are presented. Various faults such as line-to-line short circuits and three-phase line-to-ground faults were simulated. Two fault points with different characteristics were compared. The voltage, frequency and active power quickly returned to their steady-state values after the fault was eliminated. From the obtained simulation results, it was verified that our control method can be operated stably against various faults.

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Load frequency control for renewable energy sources for isolated power system by introducing large scale PV and storage battery

Energy Reports ◽

10.1016/j.egyr.2020.12.030 ◽

2020 ◽

Vol 6 ◽

pp. 1597-1603

Author(s):

Lei Liu ◽

Tomonobu Senjyu ◽

Takeyoshi Kato ◽

Abdul Motin Howlader ◽

Paras Mandal ◽

...

Keyword(s):

Renewable Energy ◽

Power System ◽

Large Scale ◽

Frequency Control ◽

Renewable Energy Sources ◽

Load Frequency Control ◽

Energy Sources ◽

Storage Battery ◽

Load Frequency ◽

And Storage

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Electric Power System Operation Mechanism with Energy Routers Based on QoS Index under Blockchain Architecture

Energies ◽

10.3390/en13020418 ◽

2020 ◽

Vol 13 (2) ◽

pp. 418 ◽

Cited By ~ 2

Author(s):

Gangjun Gong ◽

Zhening Zhang ◽

Xinyu Zhang ◽

Nawaraj Kumar Mahato ◽

Lin Liu ◽

...

Keyword(s):

Renewable Energy ◽

Power System ◽

Electric Power ◽

Distribution Networks ◽

Electric Power System ◽

Control Flow ◽

Utilization Efficiency ◽

Stable Operation ◽

Bidirectional Power Flow ◽

Transmission And Distribution

With the integration of highly permeable renewable energy to the grid at different levels (transmission, distribution and grid-connected), the volatility on both sides (source side and load side) leading to bidirectional power flow in the power grid complicates the control mechanism. In order to ensure the real-time power balance, energy exchange, higher energy utilization efficiency and stability maintenance in the electric power system, this paper proposes an integrated application of blockchain technology on energy routers at transmission and distribution networks with increased renewable energy penetration. This paper focuses on the safe and stable operation of a highly penetrated renewable energy grid-connected power system and its operation. It also demonstrates a blockchain-based negotiation model with weakly centralized scenarios for “source-network-load” collaborative scheduling operations; secondly, the QoS (quality of service) index of energy flow control and energy router node doubly-fed stability control model were designed. Further, it also introduces the MOPSO (multi-objective particle swarm optimization) algorithm for power output optimization of multienergy power generation; Thirdly, based on the blockchain underlying architecture and load prediction value constraints, this paper puts forward the optimization mechanism and control flow of autonomous energy coordination of b2u (bottom-up) between router nodes of transmission and distribution network based on blockchain.

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Transmission line switching in power system planning with large scale renewable energy

2015 First Workshop on Smart Grid and Renewable Energy (SGRE) ◽

10.1109/sgre.2015.7208740 ◽

2015 ◽

Cited By ~ 10

Author(s):

Tian Lan ◽

Garng. M. Huang

Keyword(s):

Renewable Energy ◽

Power System ◽

Transmission Line ◽

Large Scale ◽

Power System Planning ◽

System Planning ◽

Line Switching

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Impact of Large Scale Wind Power Transmission on System Dynamic Stability

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.448-453.2535 ◽

2013 ◽

Vol 448-453 ◽

pp. 2535-2539

Author(s):

Jun Cheng ◽

Qiang Yang ◽

Tao Zhu ◽

Ai Meng Wang ◽

Xue Feng Hu ◽

...

Keyword(s):

Power System ◽

Dynamic Stability ◽

Large Scale ◽

Wind Farm ◽

System Analysis ◽

Power Transmission ◽

Damping Ratio ◽

Wind Farms ◽

Stable Operation ◽

Large Area

With the scale of the wind farm growing fast, its impact on the power system has become increasingly apparent. So the research has a significant meaning on the characteristics of dynamic stability of the power system which contains wind farms, and the stable operation of the large area interconnected power grid. In this paper it realized the application of the double-fed wind turbine grid model by using power system analysis software PSD-BPA. The analysis of the generator power Angle curve which indicate the state after the failure of N-1 shows as follows: with the wind farms integration on the grid, the damping ratio is decreased slightly but little change after the system failure of N-1, which is still live up to the standard of grid stability.

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